Observation on the therapeutic effect of rolling the target muscle groups of lower limbs with foam rollers of different shore hardness on DOMS.

Objective: This experiment aims to explore how foam rollers of different Shore hardness affect DOMS, providing insights for sports therapy.

Methods: Forty participants from Shanghai Sanda University who have no habit of strength training, no lower limb injury, and meet the health standards were selected to conduct three experiments under the conditions of no intervention, using a 50 Shore hardness foam roller, and using a 60 Shore hardness foam roller, respectively. Data were recorded before and after modeling, as well as 24, 48, and 72 hours later.